Spudgun the other question you asked was if you can use an angle grinder.
I've used them on tiles - but a word of warning. Even the smallest angle grinders kick like a mule. They only have two settings. Off - and light speed.
When you hit the button expect it to kick like a mule. And hang on.
They are ok if you dont need accuracy. Beware they will not be easy to control. I used one for half a day and my hands were shaking.
Also make sure you have full protection including LONG sleeve shirt, GOGGLES and trousers. They are vicious with chipping and I found my arms covered in stratches where chips flew by because I had a tee shirt on.
The final downside is water cooling. There aint any! - I tried to spray water but it flys everywhere so nice and messy. Proper tile cutters have a water delivery method and collector. In short it might be easier to stick with the tile cutter.